Table 6.

Linear Regression Analysis of Total Time for the Three Methods

Variables	Total Time
	B	SE	Beta	t	P
Constant	2.62	1.222		2.144	0.033
Gender	0.333	0.391	0.058	0.852	0.395
Age	0.011	0.014	0.055	0.773	0.44
Surgical catheter	0.522	0.202	0.178	2.591	0.01
BMI	0.46	0.265	0.115	1.734	0.084

Abbreviation: BMI, body mass index.